reusableview-dequeue-declaration

reusableview-dequeue-declaration.swift

//Dequeue methods for UICollectionView

func dequeueReusableCell<T: UICollectionViewCell>(for indexPath: IndexPath) -> T where T: ReusableView {
    guard let cell = dequeueReusableCell(withReuseIdentifier: T.defaultReuseIdentifier, for: indexPath) as? T else {
        fatalError("Could not dequeue cell with identifier: \(T.defaultReuseIdentifier)")
    }
    return cell
}

func dequeueReusableSupplementaryView<T: UICollectionReusableView>(ofKind: String, indexPath: IndexPath) -> T where T: ReusableView {
    guard let supplementaryView = dequeueReusableSupplementaryView(ofKind: ofKind, withReuseIdentifier: T.defaultReuseIdentifier, for: indexPath) as? T else {
        fatalError("Could not dequeue supplementary view with identifier: \(T.defaultReuseIdentifier)")
    }
    return supplementaryView
}

//Dequeue methods for UITableView

func dequeueReusableCell<T: UITableViewCell>(for indexPath: IndexPath) -> T where T: ReusableView {
    guard let cell = dequeueReusableCell(withIdentifier: T.defaultReuseIdentifier, for: indexPath) as? T else {
        fatalError("Could not dequeue cell with identifier: \(T.defaultReuseIdentifier)")
    }
    return cell
}

func dequeueReusableHeaderFooterView<T: UITableViewHeaderFooterView>(_ : T.Type) -> T where T: ReusableView {
    guard let headerFooter = dequeueReusableHeaderFooterView(withIdentifier: T.defaultReuseIdentifier) as? T else {
        fatalError("Could not dequeue Header/Footer with identifier: \(T.defaultReuseIdentifier)")
    }
    return headerFooter
}